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Grosse, Katja; Call, Josep; Carpenter, Malinda; Tomasello, Michael – Language Learning and Development, 2015
In all human cultures, people gesture iconically. However, the evolutionary basis of iconic gestures is unknown. In this study, chimpanzees and bonobos, and 2- and 3-year-old children, learned how to operate two apparatuses to get rewards. Then, at test, only a human adult had access to the apparatuses, and participants could instruct her about…
Descriptors: Animals, Animal Behavior, Child Behavior, Nonverbal Communication
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Seed, Amanda M.; Call, Josep – Developmental Psychology, 2014
By 3 years of age, children can solve tasks involving physical principles such as locating a ball that rolled down a ramp behind an occluder by the position of a partially visible solid wall (Berthier, DeBlois, Poirer, Novak, & Clifton, 2000; Hood, Carey, & Prasada, 2000). However, the extent to which children use physical information (the…
Descriptors: Developmental Psychology, Physics, Problem Solving, Logical Thinking